Abstract:
Tooth belts or toothed rack drives are used to generate a relative movement between two machine components (1, 2) adjacent to one another, in particular a machine bed and a machine sled. In both cases, a belt (8) is provided which extends over the guiding path (5) and also, over a possible toothed rack (4). In order to change over quickly and simply from a tooth belt drive to a toothed rack drive (3), the same primary drive shaft (12) is used and the same belt guidance mechanism is used for both. In a toothed rack drive (3), the belt (8) is drawn for this purpose in a loop over a deflection roller (23) which is mounted so as to be freely rotatable on the primary drive shaft (12). For this purpose the deflection roller (23) is made up of two halves, axially separated from one another, which are arranged on both sides of the primary drive shaft pinion (14) and have a larger diameter than the latter. In this way the belt (8) is led in a loop and with a certain slack over the pinion (14). The pinion (14) can drive the toothed rack (4) either by way of an intermediate wheel (15) or directly. In order to change over to a tooth belt drive, the primary drive shaft pinion (14) and the deflection roller (23) are disconnected from the primary drive shaft (12) and exchanged for a toothed belt pinion. Likewise, the smooth belt (8) is then exchanged for a toothed belt.
Abstract:
A drive unit for transport devices, for example work platforms, lifts and similar equipment which are used to transport people and/or material and which, together with the drive unit, can travel in either direction of movement along a track having a transmission profile, is characterized in that a housing (1, 2, 24) or a carrier is provided to hold the drive unit (39, 40, 41, 42) and connect it to a transport device, the housing or carrier being driven along the track (7, 18, 26, 38, 46, 47, 52, 52) in either direction of movement; that the power from the drive (39, 40, 41, 42) is transmitted directly into the transmission profile of the track (7, 18, 26, 38, 46, 47, 52, 53) through one or more segments (5, 16, 27, 33), and that the segments (5, 16, 17, 33) circulate in either direction around at least one drive wheel (10, 28, 35).
Abstract:
Die Erfindung betrifft ein Verfahren und eine Einrichtung zum Übertragen von Kräften und/oder Bewegungen zwischen einem drehenden Antriebsteil (2) und mindestens einem Abtriebsteil (3). Die Übertragung erfolgt mittels mindestens einer biegsamen Zahnwelle (4) und mindestens eines Zahnrads (5). Die Zahnwelle (4) wird drehend angetrieben und kämmt in der Art eines Schneckentriebs mit ein oder mehreren Zahnradern (5).
Abstract:
A positioner controllably to shift an object linearly, utilizing a pair of mutually engageable gear belts, one of which is static and the other is dynamic. The dynamic gear belt includes a bight engaged to and driven by a rotary pinion. The gear belts are mutually engaged except for that part of the dynamic belt which is in the bight.
Abstract:
The invention relates to a method and a device for transmitting forces and/or movements between a rotating driving part (2) and at least one driven part (3). Force is transmitted by means of at least one flexible toothed shaft (4) and at least one toothed wheel (5). The toothed shaft (4) is rotatably driven and meshes with one or several toothed wheels (5) similar to a worm gear.
Abstract:
The invention relates to a roller element (10) which has a central body (1) and a roller unit (2). Said roller unit (2) is mounted so as to circulate on a non-circular race (21) about the central body (1) and so as to be mobile with respect to the central body (1) by the rolling movement of the rollers (3) of the roller unit (2) on the central body (1). The rollers (3) are provided on the exterior of the roller unit (2) for rolling off on a rigid counter body (5). The roller element (10) is provided with drive means (6) which engage with the roller unit (2) and drive the same in relation to the central body (1). The roller unit (2) is directly driven by engagement of the drive means (6) between the rollers (3) and is pulled or pushed on the race (21) about the central body (1). At least in those sections where the central body (1) puts pressure on the rollers (3) with regard to the counter body (5), the rollers (3) roll off on the central body (1), thereby propelling on their other face the roller element (10) as a whole in relation to the counter body (5).
Abstract:
Protection of the guide (9, 14) of two machine parts (1, 2) which move in relation to one another and are linked together by this guide (9, 14). In order to protect the guide track (9) located on a machine part (1) from this accumulation of dust, grease, oil and other similar matter, the track is located in a guide channel which is almost entirely closed. This guide channel is accessible only by a slot in the top which enables the guide pieces (14) of the other machine part (2) to be engaged. This slot is covered firstly by the casing of the machine part (2) and closed off in the region outside this casing by a belt (4). The guide track (9) is thus covered on the outside in each position of the machine part (2). When a toothed transmission belt system (3) is used, the toothed transmission belt (4) serves both as a drive and cover element.
Abstract:
Die vorliegende Erfindung betrifft Kettenglied (1) für eine an sich flexible Gliederkette (K), bei der miteinander verbundene Kettenglieder (1) relativ zueinander beweglich und miteinander verriegelbar sind, so dass die an sich flexible Gliederkette (K) durch Verriegelung der Kettenglieder (1) miteinander versteift werden kann, wobei das Kettenglied (1) wenigstens einen ersten Verbindungsabschnitt (101) für die Verbindung mit einem ersten Kettenglied und einen weiteren zweiten Verbindungsabschnitt (111) für die Verbindung mit einem zweiten Kettenglied aufweist. Erfindungsgemäß ist vorgesehen, dass das Kettenglied (1) einen Träger (10) mit dem ersten Verbindungsabschnitt (101) und ein relativ zu dem Träger (10) verstellbar, vorzugsweise verschieblich gelagertes Verstellteil (11) mit dem zweiten Verbindungsabschnitt (111) aufweist.